1. Download Auto Midi Player (There are many types of auto players, I will only share one of them)
2. Play according to the application instructions.
3. use the midi that I have provided and you can play it.

This is how to use auto player for any game that has 21 instrument keys:

1. Download Auto Midi Player (link below)
2. Play according to the application instructions.
3. use the midi that I have provided and you can play it.

You can connect a midi controller and play it like playing a real piano (suitable for those who want to learn it)

Note: I made a custom MIDI to play in the game so the instrument sounds like a real piano and doesn't get messy. This MIDI is only compatible with in-game instruments that have a 21-key layout, such as: Genshin Impact, Naraka: Bladepoint, Undawn, Once Human, Moonlight Blade, Where Winds Meet, Identity V, Roblox, and other games that support the 21-key setup.